Dental triturating appliance



Aug 2 1927. 1,637,569

M. M. HOUSE DENTAL TRITURATING APPLIANCE Filed Nov. 6, 1924 2 Sheets-Sheet 1 IIIIIIY IIIIIII H J! I 4 III L J8 I 1 J1 J2 /0 %7 28 J4 a6 0 J3 H k 24 a"? r Ii I Z- l'- w Z 4 I g LH 20 Zeb 22 Z Jill/aria why/e: v

2 A M. M. HOUSE DENTAL TRITURATI NG APPLIANCE Filed Nov. 6, 1924 2 Sheets-Sheet 2 the; 1.

Patented Aug. 2 1927. c

( UNITED YSTAT Application filed November The present invention relates to dental apparatus,andaims to devise a novel and more efiicient form of triturating appliance for use with articulating or occluding operations involved in theniaking of artificial dentures or like work. I The special object in view is ,to providea device of this character which is adapted, by an improved mode of grinding or milling action, to correct or remove the inaccuracies present in imperfect occlusion. Inthe proposed embodimentof the mvention, I employ means for elfecting'a continuous unidirectional milling or grinding movement of one of the dentures with reierence to the other, throughout the various positions ,of occlusion occupied by the dentures. It is a further object of the invention to provide a construction which may be em- @130 the accompanying drawings illustrating one form of construction which I have deapparatus constructedin present invention; s I U I Figure 2 1s a'plan v1ew of: the same,

"be novelwill be particularly set forthand: claimed; i

vised for embodying theproposedimprovements, after whichthose features deemed to In the drawings v c I Figure 1 is a side elevation illustrat ng an accordance withthe Figure 3 is a vertical sectional view, rep&

resentingiasection on the line III- TH of Figure 2; I

Figures 4and 5 are detailsections on the lines IV-IV and V-V respectively of Fig jure3; and, H s

r Figurefi isa diagrammaticview to illus- 1 trate the rotative action ofthe eccentric and resultant movement ofthe plat ng the, ,upperdenture. a

Referring now to thedrawings in detail,

these illustrate the proposed improvements in relation toa form of articulator or occluding appliance in more or less common This appliance comprises a framework made up ofva lower frame member for theysupport of a horizontally adjustablebar" llwhichcarries' the lower plastic mounting 12 for: the lower denture 14; this barll is providedwith a front supportingleg15 and I I 1 HILUS Mi HOUSE, OF KANSAS CITY, MISSOURI;

PAT NT. or

g v 1 ,DENTAL TRITUBATING'APPLIANCE. Y

6,1924. Serial No. 748,070.

with a rear adjustable screw 16 journaledli'n the frame 10 adjacent to a stop or limiting screwj17 which determines the longitudinal position of the bar for central occlusion.

This bar isclamped in any desired position by means of a" clamping screw 18.

wardly projecting arms 20 connected by almed pivots 21 to the opposite extremities of a yoke member 22, the middle point or [which is provided with an inclined pivot 24 for connection with the inclined rear end portion of the upper horizontal bar 25 designed to support the upper plastic mount- 2 .ing 26 tor the upper denture27. The rear end of this bar 25 is provided with a screw 28 which is pointed for engagement with a tapered recess 29 (see Figure 3) in the 'mem-r her 22, so as to either clamp the bar 25in central position 01 permit slight movement {thereof in either lateral direction. At its other end, the bar 25 is provided with a bear- I 111g portion '30 and recess 31 for receiving the stem 32 and projection33, respectively, of a bracket 34 having a split sleeve portion35 for mounting a screw post 36 adapted to be clamped by means of the external clamping collar 37 on the lower end of the sleeve 35.

The lower end of the post 36 is'adapted to be received within a cup elements 38 carried by the front "end of the bar .11, this element38 havin downwardly converging walls designer for aliningthe post andthe bar 35 'inprop'er position for central occlusion. The

1,637,569 rice,

The frame member 10 is formed wium I bracket 34 also carries a rotatable stop eler fment 39 adapted to be turned into position for engagement with the head of the post 36 to limit its lowering movement in determining the paral1elrelati0n of the bars lland 25."A suitable 'clam'pin screw 40 is used 'tosecu're the stem 32'to tlie bearin 30.

The construction thus far described is for the most part con'nnon and well known-,and the present improvement resides-in the tri turator device which I associate with the upparting theretoa continuous rotary movement of small amplitude. In theformof construction illustrated, I provide the plate ll which carries the mounting 26 with apin 42, and onthe upper face of thebar 25 I secure a bearing, block 43 by means. of screws 44, and mount in said block an eccentric member 45 formed with aneccentrically {per denture 27 and its mounting 26 for imlocated recess or socket 46 for receiving the u p r end of thepin 42. An opening His action of the eccentric member 45.

provided in the bar 25, large enough to permit the play of the pin 42 in response'to the ter is formed with ani upwardly projecting shank 48 terminating inan attenuated extension 49 adapted to makeconnection with a flexible shaft coupling (not shown) such as that of .a dental engine, or the eccentric may be rotated by means of a belt drive applied to a pulley 50 mounted on the shank 48 lot the eccentric; V

Various means maybe employed for mjovably supporting the upper denture and its plate 41 from the bar 25, for the purpose of permitting the movements impartedthereto from the eccentric, the method illustrated comprising the use of a plate 52 adapted to restfon the top face of the bar '25 and mm nected by a rear screw '53 and two front screws 54 to the plate 41. The screw 53 is accommodated byan enlarged opening 55 in bar 25, while the screws 54 clear the opposite sides of the bar and carry suitable spacing blocks 56 (see Figure 4) In the middle portion of the plate 52 is cut an opening 57 amply large to clear the bearingblock 43 (see Figure 5). By this means an easy floating support or bearing is provided for the upper denture and its mounting, adapted .to

facilitate complete freedom of movement thereof in response to the actuation of the eccentric.

The general method of using the appliance, including the operation of the improved triturative feature, will now be out' lined. vThetrame parts areshown in Fig- Iuresl and 3 as adjusted for the triturating -operation .in the position known as central occlusion, this position being determined by .means of the various adjustments above referred to, including the seating of thelower end of the screw post 36l111i3l16bQfl30111 of i the; cup 38,.said screw being thereafter retracted or raised slightly, as shown, to transterth'eweight; otthe pivoted parts to the lower denture '14. The usual grinding compoundis applied to the dentures and the tri- Kturative action is then started by the'opera 7 tion of the eccentric through the mediumof i any suitable drive thereto. The method of i mounting-the upper denture 27 provides the sameiwith a floating support adapting it for free movement in any direction about'the combined axes Jot the pin 42 and eccentric member 45, therange of thismovement beinglample for covering the entire possible rangeot engagement or articulation of the dentures in all:positions of occlusion. This range and the nature ofthe movement of the upper denture are outlinedfin the' diagram in Figure 6, in which the arrows 60 indicate the. direction of operative 'movements 7 whichvariouspoints-A ofthe upper model 66 for denture tendto execute in response to the action ofthe eccentric 45 rotating in the The latteeth giving-risexto a complex dragging etdirection indicated by the arrow 61. With the dentures in occluded relation, however, it is evident that the actual movement of the upper,dentureiwill be a modification of that illustrated, due to the irregularities in the feet upon the upper denture and imparting to it a correspondingly irregular movement.

The range of pivotal movement of the denture-carrying plate 41 is also represented by dotted lines in Figure 6, this movement beingot course limited, as by the engagement of the spacing blocks 56 with the adjacent sides of thebar 25 (Figure 4). I

The object of this character of movementof theupper' denture is to effect the milling or triturating action by the movement approachinga's nearly as possible that of a mortar and pestle, by which actionthe desired grinding efi'ect is best attained for removing or correcting the inaccuracies of 1mperfect occlusion. In the ordinary grinding with the position of central occlusion, the

grinding action is carried out with a reciproeating movement tending to produce a too great extent of flat surfacesin order to obtain the required play room for the teeth,

operations on artificial dentures, beginning and with a corresponding decrease in bitingefficiency. In the present construction, the grinding movement is efiected with a continuous approximately circular 1notions1mulating the mortar and pestle action, which is that most truly adapted to the conditions After grinding in central occlusion, the

screw 28 is loosened andthe operation is carried out .for'right and left lateral occlusion, and thereafter for protrusive and retrusive occlusion, for which purpose the screws 16 and 17 arev adjusted to give the proper position to thelo'wer denture.

' The completion of the operation results in dentures having the r occlusal surfaces of a substantially ideal character as reg'ards functioning' with a smoothfgliding' movement;

and having ample play room without any vertical movementor" the lowerjaw', besides which greater bitingetficiency'is attained by the elimination of flat surfaces as far as pos siblefj 1 From the foregoing: itawill' be apparent that I lnrve'devised a practical and highly efiicient 'apparatus for carrying out the de- :siredObjeCts of the improvements,andwhile 7 11 have shown whatfI now regard :as one approved form of embodiment thereof, I desire to reserve theright to make all such changes or modifications as may fairly fall within the scope of the appended claims.

WhatI claim is:

1. An attachment for articulators .or occluding frames, comprising a denture-holding element adapted for removable connec: tion to the articulator or frame, said element being also adapted for universal floating movement in a single plane, and means for imparting to said element a continuous unidirectional movement of small amplitude.

2. A dental appliance comprising a pair of relatively adjustable denture-supporting members, a denture-holding element adapted for attachment to one of said members, and mounted for relative floating movement in a single plane, and means forimparting a, continuous movement of small mplitude signature.

or swinging movement of said element independent of said first movement.

3. A dental appliance comprising a pair of relatively adjustable denture-supporting members, a. denture-holding element adapted for attachment to one, of said members and mounted for relative floating movement in a single plane, means for actuating said element for imparting a continuous movement thereto ofsmall amplitude while allowing a pivotal or swinging movement of the element independent of said first movement, and means for restricting the swinging movement of the element.

In witness whereof I hereunto afiix-my MILUS M. HOUSE. 

